Water-cooled plate-finishing machine



J. A. ISBELL March 11, 1930.

WATER COOLED PLATE FINISHING MACHINE Filed July 6, 1927 3 Sheets-Sheet 1J. A. ISBELL March 11, 1930.

WATER COOLED PLATE FINISHING MACHINE Filed July 6, 1927 Y 3 Sheets-Sheet2 NAN March 11, 1930. J. A. ISBELL 1,750,406

WATER COOLED PLATE FINISHING MACHINE Filed July 6, 1927 3 Sheets-Sheet 5Patented Mar. 11, 1930 UNITED STATES PATENT OFFICE JOHN A. ISBELL, FPLAINFIELD, NEW JERSEY, ASSIGNOR 'I'O WOOD NEWSPAPER MA- CHINERYCORPORATION, OF NEW YORK, N. Y A CORPORATION OF VIRGINIA WATERCOOLEDPLATE-FINISHING MACHINE Application filed July 6,

This invention relates to that type of machine for finishing stereotypeplates in which the plate is clamped inside a cylinder which is revolvedso that the rotating plate will be shaved by a stationary knife locatedwithin the cylinder.

The principal object of this invention is to provide an eflicient meansfor cooling the plate during the shaving operation uniformly so that theplate may retain its shape during that operation and become set in theformin which it is held during that time.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which Fig. 1 is aside view of a stereotype plate shaving machine constructed inaccordance with this invention;

Fig. 2 is a central vertical sectional view of the same;

Fig. 3 is a transverse sectional view on the line 33 of Fig. 1;

Fig. 4 is an end view as indicated by the 25 arrow 4 in Fig. 1; and

Fig. 5 is a part of a sectional view similar to Fig. 2 showing amodification.

Referring to the first four figures, it will be seen that a rotarycylinder 10 is mounted 30 on a stationary shaft 11 carried on the frame12. This shaft is provided with hubs 13 which are connected with thecylinder 10 by plates 14 having screws for tightening them up andpacking 15 for preventing the escape of water. The cylinder runs on apair of bearing rings 16 supported on the frame and it is rotated by apower driven shaft 17 having a worm 18 driving a worm wheel 19 which iseither integral with the cylinder 10 or secured thereto in any desiredway.

On the stationary shaft or axle 11 is fixed stationary blade 20 which isan ordinary shaving blade for shaving the ribs of the plate down to acorrect thickness.

For the purpose of cooling the plate during the shaving operation, wateris led into the axle 11 from a pipe 21 and through a central passage 22in the axle to a series of ports 23 located in a groove around the hub13 at one 0 end. A pair of arms 25 extend out from 1927. Serial No.203,728.

the bearing of the cylinder on the hub toward the circumference of thecylinder. They are arranged to make an angle with each other less than180 so as to provide for allowing the cylindrical plates to be pushedinto the cylinder longitudinally, without interference from them. Thearms are hollow and open at their inner ends. The water is conductedthrough these arms into a circumferential chamber 26 formed in the bodyof the revolving cylinder. The water is discharged from the other end ofthis cylinder through similar arms 27 and into the other hub 13 and outthrough a discharge pipe 28.

By this construction initial heat of the plate is reduced and the plateis kept cool during the shaving operation so that the plate sets in theform in which it is clamped in the cylinder. The means for clamping theplate in the cylinderv is not shown as any ordinary meansrfor thatpurpose can be used.

A modification is shown in Fig. 5 in which the cooling is performed onthe outside of the cylinder instead of by a chamber inside. In this casethe cylinder 30 is mounted and operates in the same way but it has nohollow wall. On the outside it is provided with gutters 31 and 32 whichextend around the periphery of the cylinder. Water is sprinkled on thetop and these gutters serve to retain the water long enough to allow itto cool the cylinder and thereby the plate inside. The water can besprayed or poured on the upper surface in any desired way. Theheat, ofcourse, is conducted to the cylinder from the plate clamped on its innersurface which cools the plate.

This constitutes a thorough cooling device for the plate clamped insidethe cylinder and does not affect the usual operation. The plate can bemoved into the cylinder lengthwise and moved out of the other endlengthwise on account of the fact that the arms 25 and 27 are slanted asshown in Fig. 4.

Although I have illustrated and described only two forms of theinventionI am aware of the fact that modifications can be made therein by anyperson skilled in the art without departing from the scope of theinvention as expressed in the claims. Therefore, I do not wish to belimited in these respects but What I do claim is 1. In a stereotypeplate shaving machine, the combination with a stationary shaft having astationary shaving blade thereon, said shaft having a pair of hubs, eachhaving a port therein, and the shaft being provided with means forintroducing water in the interior of one of the hubs and discharging itfrom the interior of the other, of a cylinder rotatably mounted on saidhubs, means on the outer peripheral surface of the cylinder for rotatingthe cylinder, said cylinder having a pair of hollow arms at each endcontacting with the hubs, each pair of arms being open to communicatewith the port of the hub at that end and the walls of the cylinder beinghollow to receive water through the arms, said arms being located at aninclination to permit the introduction and discharge of a curvedstereotype printing plate endwisc.

2. In a stereotype plate shaving machine, the combination with astationary shaft having a stationary shaving blade thereon, said shafthaving a pair of hubs, each having a port therein, and the shaft beingprovided with means for introducing water in the interior of one of thehubs and discharging it from the interior of the other, of a cylinderrotatably mounted on said hubs, a frame, a power driven shaft mounted onsaid frame and carrying a worm, a worm Wheel on the outer peripheralsurface of the cylinder cooperating with said worm for rotating thecylinder, said cylinder having a pair of hollow arms at each endcontacting with the hubs, each pair of arms being open to communicatewith the port of the hub at that end and the walls of the cylinder beinghollow to receive water through the arms, said arms being located at aninclination to permit the introduction and discharge of a curvedstereotype printing plate endwise.

3. In a stereotype plate shaving machine, the combination with a shafthaving a shaving blade thereon, said shaft having a pair of hubs, eachhaving a port therein, and the shaft being provided with means forintroducing water in the interior of one of the hubs and discharging itfrom the interior of the other, of a cylinder mounted on said hubs,means for creating a relative rotary motion between the hubs andcylinder, said cylinder having a pair of hollow arms at each endcontacting with the hubs, each pair of arms being open to communicatewith the port of the hub at that end and the walls of the cylinder beinghollow to receive water through the arms, said arms being offsetdownwardly to permit the introduction and discharge of a curvedstereotype printing plate endwise.

In testimony whereof I have hereunto aflixed my signature.

JOHN A. ISBELL.

